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<FONT color="green">001</FONT>    /*<a name="line.1"></a>
<FONT color="green">002</FONT>     * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a>
<FONT color="green">003</FONT>     * contributor license agreements.  See the NOTICE file distributed with<a name="line.3"></a>
<FONT color="green">004</FONT>     * this work for additional information regarding copyright ownership.<a name="line.4"></a>
<FONT color="green">005</FONT>     * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a>
<FONT color="green">006</FONT>     * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
<FONT color="green">007</FONT>     * the License.  You may obtain a copy of the License at<a name="line.7"></a>
<FONT color="green">008</FONT>     *<a name="line.8"></a>
<FONT color="green">009</FONT>     *     http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
<FONT color="green">010</FONT>     *<a name="line.10"></a>
<FONT color="green">011</FONT>     * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
<FONT color="green">012</FONT>     * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
<FONT color="green">013</FONT>     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
<FONT color="green">014</FONT>     * See the License for the specific language governing permissions and<a name="line.14"></a>
<FONT color="green">015</FONT>     * limitations under the License.<a name="line.15"></a>
<FONT color="green">016</FONT>     */<a name="line.16"></a>
<FONT color="green">017</FONT>    <a name="line.17"></a>
<FONT color="green">018</FONT>    package org.apache.commons.configuration;<a name="line.18"></a>
<FONT color="green">019</FONT>    <a name="line.19"></a>
<FONT color="green">020</FONT>    import java.lang.reflect.Array;<a name="line.20"></a>
<FONT color="green">021</FONT>    import java.math.BigDecimal;<a name="line.21"></a>
<FONT color="green">022</FONT>    import java.math.BigInteger;<a name="line.22"></a>
<FONT color="green">023</FONT>    import java.util.ArrayList;<a name="line.23"></a>
<FONT color="green">024</FONT>    import java.util.Arrays;<a name="line.24"></a>
<FONT color="green">025</FONT>    import java.util.Collection;<a name="line.25"></a>
<FONT color="green">026</FONT>    import java.util.Collections;<a name="line.26"></a>
<FONT color="green">027</FONT>    import java.util.Iterator;<a name="line.27"></a>
<FONT color="green">028</FONT>    import java.util.List;<a name="line.28"></a>
<FONT color="green">029</FONT>    import java.util.NoSuchElementException;<a name="line.29"></a>
<FONT color="green">030</FONT>    import java.util.Properties;<a name="line.30"></a>
<FONT color="green">031</FONT>    <a name="line.31"></a>
<FONT color="green">032</FONT>    import org.apache.commons.configuration.event.ConfigurationErrorEvent;<a name="line.32"></a>
<FONT color="green">033</FONT>    import org.apache.commons.configuration.event.ConfigurationErrorListener;<a name="line.33"></a>
<FONT color="green">034</FONT>    import org.apache.commons.configuration.event.EventSource;<a name="line.34"></a>
<FONT color="green">035</FONT>    import org.apache.commons.configuration.interpol.ConfigurationInterpolator;<a name="line.35"></a>
<FONT color="green">036</FONT>    import org.apache.commons.lang.BooleanUtils;<a name="line.36"></a>
<FONT color="green">037</FONT>    import org.apache.commons.lang.ClassUtils;<a name="line.37"></a>
<FONT color="green">038</FONT>    import org.apache.commons.lang.ObjectUtils;<a name="line.38"></a>
<FONT color="green">039</FONT>    import org.apache.commons.lang.text.StrLookup;<a name="line.39"></a>
<FONT color="green">040</FONT>    import org.apache.commons.lang.text.StrSubstitutor;<a name="line.40"></a>
<FONT color="green">041</FONT>    import org.apache.commons.logging.Log;<a name="line.41"></a>
<FONT color="green">042</FONT>    import org.apache.commons.logging.impl.NoOpLog;<a name="line.42"></a>
<FONT color="green">043</FONT>    <a name="line.43"></a>
<FONT color="green">044</FONT>    /**<a name="line.44"></a>
<FONT color="green">045</FONT>     * &lt;p&gt;Abstract configuration class. Provides basic functionality but does not<a name="line.45"></a>
<FONT color="green">046</FONT>     * store any data.&lt;/p&gt;<a name="line.46"></a>
<FONT color="green">047</FONT>     * &lt;p&gt;If you want to write your own Configuration class then you should<a name="line.47"></a>
<FONT color="green">048</FONT>     * implement only abstract methods from this class. A lot of functionality<a name="line.48"></a>
<FONT color="green">049</FONT>     * needed by typical implementations of the {@code Configuration}<a name="line.49"></a>
<FONT color="green">050</FONT>     * interface is already provided by this base class. Following is a list of<a name="line.50"></a>
<FONT color="green">051</FONT>     * features implemented here:<a name="line.51"></a>
<FONT color="green">052</FONT>     * &lt;ul&gt;&lt;li&gt;Data conversion support. The various data types required by the<a name="line.52"></a>
<FONT color="green">053</FONT>     * {@code Configuration} interface are already handled by this base class.<a name="line.53"></a>
<FONT color="green">054</FONT>     * A concrete sub class only needs to provide a generic {@code getProperty()}<a name="line.54"></a>
<FONT color="green">055</FONT>     * method.&lt;/li&gt;<a name="line.55"></a>
<FONT color="green">056</FONT>     * &lt;li&gt;Support for variable interpolation. Property values containing special<a name="line.56"></a>
<FONT color="green">057</FONT>     * variable tokens (like &lt;code&gt;${var}&lt;/code&gt;) will be replaced by their<a name="line.57"></a>
<FONT color="green">058</FONT>     * corresponding values.&lt;/li&gt;<a name="line.58"></a>
<FONT color="green">059</FONT>     * &lt;li&gt;Support for string lists. The values of properties to be added to this<a name="line.59"></a>
<FONT color="green">060</FONT>     * configuration are checked whether they contain a list delimiter character. If<a name="line.60"></a>
<FONT color="green">061</FONT>     * this is the case and if list splitting is enabled, the string is split and<a name="line.61"></a>
<FONT color="green">062</FONT>     * multiple values are added for this property. (With the<a name="line.62"></a>
<FONT color="green">063</FONT>     * {@code setListDelimiter()} method the delimiter character can be<a name="line.63"></a>
<FONT color="green">064</FONT>     * specified; per default a comma is used. The<a name="line.64"></a>
<FONT color="green">065</FONT>     * {@code setDelimiterParsingDisabled()} method can be used to disable<a name="line.65"></a>
<FONT color="green">066</FONT>     * list splitting completely.)&lt;/li&gt;<a name="line.66"></a>
<FONT color="green">067</FONT>     * &lt;li&gt;Allows to specify how missing properties are treated. Per default the<a name="line.67"></a>
<FONT color="green">068</FONT>     * get methods returning an object will return &lt;b&gt;null&lt;/b&gt; if the searched<a name="line.68"></a>
<FONT color="green">069</FONT>     * property key is not found (and no default value is provided). With the<a name="line.69"></a>
<FONT color="green">070</FONT>     * {@code setThrowExceptionOnMissing()} method this behavior can be<a name="line.70"></a>
<FONT color="green">071</FONT>     * changed to throw an exception when a requested property cannot be found.&lt;/li&gt;<a name="line.71"></a>
<FONT color="green">072</FONT>     * &lt;li&gt;Basic event support. Whenever this configuration is modified registered<a name="line.72"></a>
<FONT color="green">073</FONT>     * event listeners are notified. Refer to the various {@code EVENT_XXX}<a name="line.73"></a>
<FONT color="green">074</FONT>     * constants to get an impression about which event types are supported.&lt;/li&gt;<a name="line.74"></a>
<FONT color="green">075</FONT>     * &lt;/ul&gt;&lt;/p&gt;<a name="line.75"></a>
<FONT color="green">076</FONT>     *<a name="line.76"></a>
<FONT color="green">077</FONT>     * @author &lt;a href="mailto:ksh@scand.com"&gt;Konstantin Shaposhnikov &lt;/a&gt;<a name="line.77"></a>
<FONT color="green">078</FONT>     * @author &lt;a href="mailto:hps@intermeta.de"&gt;Henning P. Schmiedehausen &lt;/a&gt;<a name="line.78"></a>
<FONT color="green">079</FONT>     * @version $Id: AbstractConfiguration.java 1234985 2012-01-23 21:09:09Z oheger $<a name="line.79"></a>
<FONT color="green">080</FONT>     */<a name="line.80"></a>
<FONT color="green">081</FONT>    public abstract class AbstractConfiguration extends EventSource implements Configuration<a name="line.81"></a>
<FONT color="green">082</FONT>    {<a name="line.82"></a>
<FONT color="green">083</FONT>        /**<a name="line.83"></a>
<FONT color="green">084</FONT>         * Constant for the add property event type.<a name="line.84"></a>
<FONT color="green">085</FONT>         * @since 1.3<a name="line.85"></a>
<FONT color="green">086</FONT>         */<a name="line.86"></a>
<FONT color="green">087</FONT>        public static final int EVENT_ADD_PROPERTY = 1;<a name="line.87"></a>
<FONT color="green">088</FONT>    <a name="line.88"></a>
<FONT color="green">089</FONT>        /**<a name="line.89"></a>
<FONT color="green">090</FONT>         * Constant for the clear property event type.<a name="line.90"></a>
<FONT color="green">091</FONT>         * @since 1.3<a name="line.91"></a>
<FONT color="green">092</FONT>         */<a name="line.92"></a>
<FONT color="green">093</FONT>        public static final int EVENT_CLEAR_PROPERTY = 2;<a name="line.93"></a>
<FONT color="green">094</FONT>    <a name="line.94"></a>
<FONT color="green">095</FONT>        /**<a name="line.95"></a>
<FONT color="green">096</FONT>         * Constant for the set property event type.<a name="line.96"></a>
<FONT color="green">097</FONT>         * @since 1.3<a name="line.97"></a>
<FONT color="green">098</FONT>         */<a name="line.98"></a>
<FONT color="green">099</FONT>        public static final int EVENT_SET_PROPERTY = 3;<a name="line.99"></a>
<FONT color="green">100</FONT>    <a name="line.100"></a>
<FONT color="green">101</FONT>        /**<a name="line.101"></a>
<FONT color="green">102</FONT>         * Constant for the clear configuration event type.<a name="line.102"></a>
<FONT color="green">103</FONT>         * @since 1.3<a name="line.103"></a>
<FONT color="green">104</FONT>         */<a name="line.104"></a>
<FONT color="green">105</FONT>        public static final int EVENT_CLEAR = 4;<a name="line.105"></a>
<FONT color="green">106</FONT>    <a name="line.106"></a>
<FONT color="green">107</FONT>        /**<a name="line.107"></a>
<FONT color="green">108</FONT>         * Constant for the get property event type. This event type is used for<a name="line.108"></a>
<FONT color="green">109</FONT>         * error events.<a name="line.109"></a>
<FONT color="green">110</FONT>         * @since 1.4<a name="line.110"></a>
<FONT color="green">111</FONT>         */<a name="line.111"></a>
<FONT color="green">112</FONT>        public static final int EVENT_READ_PROPERTY = 5;<a name="line.112"></a>
<FONT color="green">113</FONT>    <a name="line.113"></a>
<FONT color="green">114</FONT>        /** start token */<a name="line.114"></a>
<FONT color="green">115</FONT>        protected static final String START_TOKEN = "${";<a name="line.115"></a>
<FONT color="green">116</FONT>    <a name="line.116"></a>
<FONT color="green">117</FONT>        /** end token */<a name="line.117"></a>
<FONT color="green">118</FONT>        protected static final String END_TOKEN = "}";<a name="line.118"></a>
<FONT color="green">119</FONT>    <a name="line.119"></a>
<FONT color="green">120</FONT>        /**<a name="line.120"></a>
<FONT color="green">121</FONT>         * Constant for the disabled list delimiter. This character is passed to the<a name="line.121"></a>
<FONT color="green">122</FONT>         * list parsing methods if delimiter parsing is disabled. So this character<a name="line.122"></a>
<FONT color="green">123</FONT>         * should not occur in string property values.<a name="line.123"></a>
<FONT color="green">124</FONT>         */<a name="line.124"></a>
<FONT color="green">125</FONT>        private static final char DISABLED_DELIMITER = '\0';<a name="line.125"></a>
<FONT color="green">126</FONT>    <a name="line.126"></a>
<FONT color="green">127</FONT>        /** The default value for listDelimiter */<a name="line.127"></a>
<FONT color="green">128</FONT>        private static char defaultListDelimiter = ',';<a name="line.128"></a>
<FONT color="green">129</FONT>    <a name="line.129"></a>
<FONT color="green">130</FONT>        /** Delimiter used to convert single values to lists */<a name="line.130"></a>
<FONT color="green">131</FONT>        private char listDelimiter = defaultListDelimiter;<a name="line.131"></a>
<FONT color="green">132</FONT>    <a name="line.132"></a>
<FONT color="green">133</FONT>        /**<a name="line.133"></a>
<FONT color="green">134</FONT>         * When set to true the given configuration delimiter will not be used<a name="line.134"></a>
<FONT color="green">135</FONT>         * while parsing for this configuration.<a name="line.135"></a>
<FONT color="green">136</FONT>         */<a name="line.136"></a>
<FONT color="green">137</FONT>        private boolean delimiterParsingDisabled;<a name="line.137"></a>
<FONT color="green">138</FONT>    <a name="line.138"></a>
<FONT color="green">139</FONT>        /**<a name="line.139"></a>
<FONT color="green">140</FONT>         * Whether the configuration should throw NoSuchElementExceptions or simply<a name="line.140"></a>
<FONT color="green">141</FONT>         * return null when a property does not exist. Defaults to return null.<a name="line.141"></a>
<FONT color="green">142</FONT>         */<a name="line.142"></a>
<FONT color="green">143</FONT>        private boolean throwExceptionOnMissing;<a name="line.143"></a>
<FONT color="green">144</FONT>    <a name="line.144"></a>
<FONT color="green">145</FONT>        /** Stores a reference to the object that handles variable interpolation.*/<a name="line.145"></a>
<FONT color="green">146</FONT>        private StrSubstitutor substitutor;<a name="line.146"></a>
<FONT color="green">147</FONT>    <a name="line.147"></a>
<FONT color="green">148</FONT>        /** Stores the logger.*/<a name="line.148"></a>
<FONT color="green">149</FONT>        private Log log;<a name="line.149"></a>
<FONT color="green">150</FONT>    <a name="line.150"></a>
<FONT color="green">151</FONT>        /**<a name="line.151"></a>
<FONT color="green">152</FONT>         * Creates a new instance of {@code AbstractConfiguration}.<a name="line.152"></a>
<FONT color="green">153</FONT>         */<a name="line.153"></a>
<FONT color="green">154</FONT>        public AbstractConfiguration()<a name="line.154"></a>
<FONT color="green">155</FONT>        {<a name="line.155"></a>
<FONT color="green">156</FONT>            setLogger(null);<a name="line.156"></a>
<FONT color="green">157</FONT>        }<a name="line.157"></a>
<FONT color="green">158</FONT>    <a name="line.158"></a>
<FONT color="green">159</FONT>        /**<a name="line.159"></a>
<FONT color="green">160</FONT>         * For configurations extending AbstractConfiguration, allow them to change<a name="line.160"></a>
<FONT color="green">161</FONT>         * the listDelimiter from the default comma (","). This value will be used<a name="line.161"></a>
<FONT color="green">162</FONT>         * only when creating new configurations. Those already created will not be<a name="line.162"></a>
<FONT color="green">163</FONT>         * affected by this change<a name="line.163"></a>
<FONT color="green">164</FONT>         *<a name="line.164"></a>
<FONT color="green">165</FONT>         * @param delimiter The new listDelimiter<a name="line.165"></a>
<FONT color="green">166</FONT>         */<a name="line.166"></a>
<FONT color="green">167</FONT>        public static void setDefaultListDelimiter(char delimiter)<a name="line.167"></a>
<FONT color="green">168</FONT>        {<a name="line.168"></a>
<FONT color="green">169</FONT>            AbstractConfiguration.defaultListDelimiter = delimiter;<a name="line.169"></a>
<FONT color="green">170</FONT>        }<a name="line.170"></a>
<FONT color="green">171</FONT>    <a name="line.171"></a>
<FONT color="green">172</FONT>        /**<a name="line.172"></a>
<FONT color="green">173</FONT>         * Sets the default list delimiter.<a name="line.173"></a>
<FONT color="green">174</FONT>         *<a name="line.174"></a>
<FONT color="green">175</FONT>         * @param delimiter the delimiter character<a name="line.175"></a>
<FONT color="green">176</FONT>         * @deprecated Use AbstractConfiguration.setDefaultListDelimiter(char)<a name="line.176"></a>
<FONT color="green">177</FONT>         * instead<a name="line.177"></a>
<FONT color="green">178</FONT>         */<a name="line.178"></a>
<FONT color="green">179</FONT>        @Deprecated<a name="line.179"></a>
<FONT color="green">180</FONT>        public static void setDelimiter(char delimiter)<a name="line.180"></a>
<FONT color="green">181</FONT>        {<a name="line.181"></a>
<FONT color="green">182</FONT>            setDefaultListDelimiter(delimiter);<a name="line.182"></a>
<FONT color="green">183</FONT>        }<a name="line.183"></a>
<FONT color="green">184</FONT>    <a name="line.184"></a>
<FONT color="green">185</FONT>        /**<a name="line.185"></a>
<FONT color="green">186</FONT>         * Retrieve the current delimiter. By default this is a comma (",").<a name="line.186"></a>
<FONT color="green">187</FONT>         *<a name="line.187"></a>
<FONT color="green">188</FONT>         * @return The delimiter in use<a name="line.188"></a>
<FONT color="green">189</FONT>         */<a name="line.189"></a>
<FONT color="green">190</FONT>        public static char getDefaultListDelimiter()<a name="line.190"></a>
<FONT color="green">191</FONT>        {<a name="line.191"></a>
<FONT color="green">192</FONT>            return AbstractConfiguration.defaultListDelimiter;<a name="line.192"></a>
<FONT color="green">193</FONT>        }<a name="line.193"></a>
<FONT color="green">194</FONT>    <a name="line.194"></a>
<FONT color="green">195</FONT>        /**<a name="line.195"></a>
<FONT color="green">196</FONT>         * Returns the default list delimiter.<a name="line.196"></a>
<FONT color="green">197</FONT>         *<a name="line.197"></a>
<FONT color="green">198</FONT>         * @return the default list delimiter<a name="line.198"></a>
<FONT color="green">199</FONT>         * @deprecated Use AbstractConfiguration.getDefaultListDelimiter() instead<a name="line.199"></a>
<FONT color="green">200</FONT>         */<a name="line.200"></a>
<FONT color="green">201</FONT>        @Deprecated<a name="line.201"></a>
<FONT color="green">202</FONT>        public static char getDelimiter()<a name="line.202"></a>
<FONT color="green">203</FONT>        {<a name="line.203"></a>
<FONT color="green">204</FONT>            return getDefaultListDelimiter();<a name="line.204"></a>
<FONT color="green">205</FONT>        }<a name="line.205"></a>
<FONT color="green">206</FONT>    <a name="line.206"></a>
<FONT color="green">207</FONT>        /**<a name="line.207"></a>
<FONT color="green">208</FONT>         * Change the list delimiter for this configuration.<a name="line.208"></a>
<FONT color="green">209</FONT>         *<a name="line.209"></a>
<FONT color="green">210</FONT>         * Note: this change will only be effective for new parsings. If you<a name="line.210"></a>
<FONT color="green">211</FONT>         * want it to take effect for all loaded properties use the no arg constructor<a name="line.211"></a>
<FONT color="green">212</FONT>         * and call this method before setting the source.<a name="line.212"></a>
<FONT color="green">213</FONT>         *<a name="line.213"></a>
<FONT color="green">214</FONT>         * @param listDelimiter The new listDelimiter<a name="line.214"></a>
<FONT color="green">215</FONT>         */<a name="line.215"></a>
<FONT color="green">216</FONT>        public void setListDelimiter(char listDelimiter)<a name="line.216"></a>
<FONT color="green">217</FONT>        {<a name="line.217"></a>
<FONT color="green">218</FONT>            this.listDelimiter = listDelimiter;<a name="line.218"></a>
<FONT color="green">219</FONT>        }<a name="line.219"></a>
<FONT color="green">220</FONT>    <a name="line.220"></a>
<FONT color="green">221</FONT>        /**<a name="line.221"></a>
<FONT color="green">222</FONT>         * Retrieve the delimiter for this configuration. The default<a name="line.222"></a>
<FONT color="green">223</FONT>         * is the value of defaultListDelimiter.<a name="line.223"></a>
<FONT color="green">224</FONT>         *<a name="line.224"></a>
<FONT color="green">225</FONT>         * @return The listDelimiter in use<a name="line.225"></a>
<FONT color="green">226</FONT>         */<a name="line.226"></a>
<FONT color="green">227</FONT>        public char getListDelimiter()<a name="line.227"></a>
<FONT color="green">228</FONT>        {<a name="line.228"></a>
<FONT color="green">229</FONT>            return listDelimiter;<a name="line.229"></a>
<FONT color="green">230</FONT>        }<a name="line.230"></a>
<FONT color="green">231</FONT>    <a name="line.231"></a>
<FONT color="green">232</FONT>        /**<a name="line.232"></a>
<FONT color="green">233</FONT>         * Determine if this configuration is using delimiters when parsing<a name="line.233"></a>
<FONT color="green">234</FONT>         * property values to convert them to lists of values. Defaults to false<a name="line.234"></a>
<FONT color="green">235</FONT>         * @return true if delimiters are not being used<a name="line.235"></a>
<FONT color="green">236</FONT>         */<a name="line.236"></a>
<FONT color="green">237</FONT>        public boolean isDelimiterParsingDisabled()<a name="line.237"></a>
<FONT color="green">238</FONT>        {<a name="line.238"></a>
<FONT color="green">239</FONT>            return delimiterParsingDisabled;<a name="line.239"></a>
<FONT color="green">240</FONT>        }<a name="line.240"></a>
<FONT color="green">241</FONT>    <a name="line.241"></a>
<FONT color="green">242</FONT>        /**<a name="line.242"></a>
<FONT color="green">243</FONT>         * Set whether this configuration should use delimiters when parsing<a name="line.243"></a>
<FONT color="green">244</FONT>         * property values to convert them to lists of values. By default delimiter<a name="line.244"></a>
<FONT color="green">245</FONT>         * parsing is enabled<a name="line.245"></a>
<FONT color="green">246</FONT>         *<a name="line.246"></a>
<FONT color="green">247</FONT>         * Note: this change will only be effective for new parsings. If you<a name="line.247"></a>
<FONT color="green">248</FONT>         * want it to take effect for all loaded properties use the no arg constructor<a name="line.248"></a>
<FONT color="green">249</FONT>         * and call this method before setting source.<a name="line.249"></a>
<FONT color="green">250</FONT>         * @param delimiterParsingDisabled a flag whether delimiter parsing should<a name="line.250"></a>
<FONT color="green">251</FONT>         * be disabled<a name="line.251"></a>
<FONT color="green">252</FONT>         */<a name="line.252"></a>
<FONT color="green">253</FONT>        public void setDelimiterParsingDisabled(boolean delimiterParsingDisabled)<a name="line.253"></a>
<FONT color="green">254</FONT>        {<a name="line.254"></a>
<FONT color="green">255</FONT>            this.delimiterParsingDisabled = delimiterParsingDisabled;<a name="line.255"></a>
<FONT color="green">256</FONT>        }<a name="line.256"></a>
<FONT color="green">257</FONT>    <a name="line.257"></a>
<FONT color="green">258</FONT>        /**<a name="line.258"></a>
<FONT color="green">259</FONT>         * Allows to set the {@code throwExceptionOnMissing} flag. This<a name="line.259"></a>
<FONT color="green">260</FONT>         * flag controls the behavior of property getter methods that return<a name="line.260"></a>
<FONT color="green">261</FONT>         * objects if the requested property is missing. If the flag is set to<a name="line.261"></a>
<FONT color="green">262</FONT>         * &lt;b&gt;false&lt;/b&gt; (which is the default value), these methods will return<a name="line.262"></a>
<FONT color="green">263</FONT>         * &lt;b&gt;null&lt;/b&gt;. If set to &lt;b&gt;true&lt;/b&gt;, they will throw a<a name="line.263"></a>
<FONT color="green">264</FONT>         * {@code NoSuchElementException} exception. Note that getter methods<a name="line.264"></a>
<FONT color="green">265</FONT>         * for primitive data types are not affected by this flag.<a name="line.265"></a>
<FONT color="green">266</FONT>         *<a name="line.266"></a>
<FONT color="green">267</FONT>         * @param throwExceptionOnMissing The new value for the property<a name="line.267"></a>
<FONT color="green">268</FONT>         */<a name="line.268"></a>
<FONT color="green">269</FONT>        public void setThrowExceptionOnMissing(boolean throwExceptionOnMissing)<a name="line.269"></a>
<FONT color="green">270</FONT>        {<a name="line.270"></a>
<FONT color="green">271</FONT>            this.throwExceptionOnMissing = throwExceptionOnMissing;<a name="line.271"></a>
<FONT color="green">272</FONT>        }<a name="line.272"></a>
<FONT color="green">273</FONT>    <a name="line.273"></a>
<FONT color="green">274</FONT>        /**<a name="line.274"></a>
<FONT color="green">275</FONT>         * Returns true if missing values throw Exceptions.<a name="line.275"></a>
<FONT color="green">276</FONT>         *<a name="line.276"></a>
<FONT color="green">277</FONT>         * @return true if missing values throw Exceptions<a name="line.277"></a>
<FONT color="green">278</FONT>         */<a name="line.278"></a>
<FONT color="green">279</FONT>        public boolean isThrowExceptionOnMissing()<a name="line.279"></a>
<FONT color="green">280</FONT>        {<a name="line.280"></a>
<FONT color="green">281</FONT>            return throwExceptionOnMissing;<a name="line.281"></a>
<FONT color="green">282</FONT>        }<a name="line.282"></a>
<FONT color="green">283</FONT>    <a name="line.283"></a>
<FONT color="green">284</FONT>        /**<a name="line.284"></a>
<FONT color="green">285</FONT>         * Returns the object that is responsible for variable interpolation.<a name="line.285"></a>
<FONT color="green">286</FONT>         *<a name="line.286"></a>
<FONT color="green">287</FONT>         * @return the object responsible for variable interpolation<a name="line.287"></a>
<FONT color="green">288</FONT>         * @since 1.4<a name="line.288"></a>
<FONT color="green">289</FONT>         */<a name="line.289"></a>
<FONT color="green">290</FONT>        public synchronized StrSubstitutor getSubstitutor()<a name="line.290"></a>
<FONT color="green">291</FONT>        {<a name="line.291"></a>
<FONT color="green">292</FONT>            if (substitutor == null)<a name="line.292"></a>
<FONT color="green">293</FONT>            {<a name="line.293"></a>
<FONT color="green">294</FONT>                substitutor = new StrSubstitutor(createInterpolator());<a name="line.294"></a>
<FONT color="green">295</FONT>            }<a name="line.295"></a>
<FONT color="green">296</FONT>            return substitutor;<a name="line.296"></a>
<FONT color="green">297</FONT>        }<a name="line.297"></a>
<FONT color="green">298</FONT>    <a name="line.298"></a>
<FONT color="green">299</FONT>        /**<a name="line.299"></a>
<FONT color="green">300</FONT>         * Returns the {@code ConfigurationInterpolator} object that manages<a name="line.300"></a>
<FONT color="green">301</FONT>         * the lookup objects for resolving variables. &lt;em&gt;Note:&lt;/em&gt; If this<a name="line.301"></a>
<FONT color="green">302</FONT>         * object is manipulated (e.g. new lookup objects added), synchronization<a name="line.302"></a>
<FONT color="green">303</FONT>         * has to be manually ensured. Because<a name="line.303"></a>
<FONT color="green">304</FONT>         * {@code ConfigurationInterpolator} is not thread-safe concurrent<a name="line.304"></a>
<FONT color="green">305</FONT>         * access to properties of this configuration instance (which causes the<a name="line.305"></a>
<FONT color="green">306</FONT>         * interpolator to be invoked) may cause race conditions.<a name="line.306"></a>
<FONT color="green">307</FONT>         *<a name="line.307"></a>
<FONT color="green">308</FONT>         * @return the {@code ConfigurationInterpolator} associated with this<a name="line.308"></a>
<FONT color="green">309</FONT>         * configuration<a name="line.309"></a>
<FONT color="green">310</FONT>         * @since 1.4<a name="line.310"></a>
<FONT color="green">311</FONT>         */<a name="line.311"></a>
<FONT color="green">312</FONT>        public ConfigurationInterpolator getInterpolator()<a name="line.312"></a>
<FONT color="green">313</FONT>        {<a name="line.313"></a>
<FONT color="green">314</FONT>            return (ConfigurationInterpolator) getSubstitutor()<a name="line.314"></a>
<FONT color="green">315</FONT>                    .getVariableResolver();<a name="line.315"></a>
<FONT color="green">316</FONT>        }<a name="line.316"></a>
<FONT color="green">317</FONT>    <a name="line.317"></a>
<FONT color="green">318</FONT>        /**<a name="line.318"></a>
<FONT color="green">319</FONT>         * Creates the interpolator object that is responsible for variable<a name="line.319"></a>
<FONT color="green">320</FONT>         * interpolation. This method is invoked on first access of the<a name="line.320"></a>
<FONT color="green">321</FONT>         * interpolation features. It creates a new instance of<a name="line.321"></a>
<FONT color="green">322</FONT>         * {@code ConfigurationInterpolator} and sets the default lookup<a name="line.322"></a>
<FONT color="green">323</FONT>         * object to an implementation that queries this configuration.<a name="line.323"></a>
<FONT color="green">324</FONT>         *<a name="line.324"></a>
<FONT color="green">325</FONT>         * @return the newly created interpolator object<a name="line.325"></a>
<FONT color="green">326</FONT>         * @since 1.4<a name="line.326"></a>
<FONT color="green">327</FONT>         */<a name="line.327"></a>
<FONT color="green">328</FONT>        protected ConfigurationInterpolator createInterpolator()<a name="line.328"></a>
<FONT color="green">329</FONT>        {<a name="line.329"></a>
<FONT color="green">330</FONT>            ConfigurationInterpolator interpol = new ConfigurationInterpolator();<a name="line.330"></a>
<FONT color="green">331</FONT>            interpol.setDefaultLookup(new StrLookup()<a name="line.331"></a>
<FONT color="green">332</FONT>            {<a name="line.332"></a>
<FONT color="green">333</FONT>                @Override<a name="line.333"></a>
<FONT color="green">334</FONT>                public String lookup(String var)<a name="line.334"></a>
<FONT color="green">335</FONT>                {<a name="line.335"></a>
<FONT color="green">336</FONT>                    Object prop = resolveContainerStore(var);<a name="line.336"></a>
<FONT color="green">337</FONT>                    return (prop != null) ? prop.toString() : null;<a name="line.337"></a>
<FONT color="green">338</FONT>                }<a name="line.338"></a>
<FONT color="green">339</FONT>            });<a name="line.339"></a>
<FONT color="green">340</FONT>            return interpol;<a name="line.340"></a>
<FONT color="green">341</FONT>        }<a name="line.341"></a>
<FONT color="green">342</FONT>    <a name="line.342"></a>
<FONT color="green">343</FONT>        /**<a name="line.343"></a>
<FONT color="green">344</FONT>         * Returns the logger used by this configuration object.<a name="line.344"></a>
<FONT color="green">345</FONT>         *<a name="line.345"></a>
<FONT color="green">346</FONT>         * @return the logger<a name="line.346"></a>
<FONT color="green">347</FONT>         * @since 1.4<a name="line.347"></a>
<FONT color="green">348</FONT>         */<a name="line.348"></a>
<FONT color="green">349</FONT>        public Log getLogger()<a name="line.349"></a>
<FONT color="green">350</FONT>        {<a name="line.350"></a>
<FONT color="green">351</FONT>            return log;<a name="line.351"></a>
<FONT color="green">352</FONT>        }<a name="line.352"></a>
<FONT color="green">353</FONT>    <a name="line.353"></a>
<FONT color="green">354</FONT>        /**<a name="line.354"></a>
<FONT color="green">355</FONT>         * Allows to set the logger to be used by this configuration object. This<a name="line.355"></a>
<FONT color="green">356</FONT>         * method makes it possible for clients to exactly control logging behavior.<a name="line.356"></a>
<FONT color="green">357</FONT>         * Per default a logger is set that will ignore all log messages. Derived<a name="line.357"></a>
<FONT color="green">358</FONT>         * classes that want to enable logging should call this method during their<a name="line.358"></a>
<FONT color="green">359</FONT>         * initialization with the logger to be used.<a name="line.359"></a>
<FONT color="green">360</FONT>         *<a name="line.360"></a>
<FONT color="green">361</FONT>         * @param log the new logger<a name="line.361"></a>
<FONT color="green">362</FONT>         * @since 1.4<a name="line.362"></a>
<FONT color="green">363</FONT>         */<a name="line.363"></a>
<FONT color="green">364</FONT>        public void setLogger(Log log)<a name="line.364"></a>
<FONT color="green">365</FONT>        {<a name="line.365"></a>
<FONT color="green">366</FONT>            this.log = (log != null) ? log : new NoOpLog();<a name="line.366"></a>
<FONT color="green">367</FONT>        }<a name="line.367"></a>
<FONT color="green">368</FONT>    <a name="line.368"></a>
<FONT color="green">369</FONT>        /**<a name="line.369"></a>
<FONT color="green">370</FONT>         * Adds a special<a name="line.370"></a>
<FONT color="green">371</FONT>         * {@link org.apache.commons.configuration.event.ConfigurationErrorListener}<a name="line.371"></a>
<FONT color="green">372</FONT>         * object to this configuration that will log all internal errors. This<a name="line.372"></a>
<FONT color="green">373</FONT>         * method is intended to be used by certain derived classes, for which it is<a name="line.373"></a>
<FONT color="green">374</FONT>         * known that they can fail on property access (e.g.<a name="line.374"></a>
<FONT color="green">375</FONT>         * {@code DatabaseConfiguration}).<a name="line.375"></a>
<FONT color="green">376</FONT>         *<a name="line.376"></a>
<FONT color="green">377</FONT>         * @since 1.4<a name="line.377"></a>
<FONT color="green">378</FONT>         */<a name="line.378"></a>
<FONT color="green">379</FONT>        public void addErrorLogListener()<a name="line.379"></a>
<FONT color="green">380</FONT>        {<a name="line.380"></a>
<FONT color="green">381</FONT>            addErrorListener(new ConfigurationErrorListener()<a name="line.381"></a>
<FONT color="green">382</FONT>            {<a name="line.382"></a>
<FONT color="green">383</FONT>                public void configurationError(ConfigurationErrorEvent event)<a name="line.383"></a>
<FONT color="green">384</FONT>                {<a name="line.384"></a>
<FONT color="green">385</FONT>                    getLogger().warn("Internal error", event.getCause());<a name="line.385"></a>
<FONT color="green">386</FONT>                }<a name="line.386"></a>
<FONT color="green">387</FONT>            });<a name="line.387"></a>
<FONT color="green">388</FONT>        }<a name="line.388"></a>
<FONT color="green">389</FONT>    <a name="line.389"></a>
<FONT color="green">390</FONT>        public void addProperty(String key, Object value)<a name="line.390"></a>
<FONT color="green">391</FONT>        {<a name="line.391"></a>
<FONT color="green">392</FONT>            fireEvent(EVENT_ADD_PROPERTY, key, value, true);<a name="line.392"></a>
<FONT color="green">393</FONT>            addPropertyValues(key, value,<a name="line.393"></a>
<FONT color="green">394</FONT>                    isDelimiterParsingDisabled() ? DISABLED_DELIMITER<a name="line.394"></a>
<FONT color="green">395</FONT>                            : getListDelimiter());<a name="line.395"></a>
<FONT color="green">396</FONT>            fireEvent(EVENT_ADD_PROPERTY, key, value, false);<a name="line.396"></a>
<FONT color="green">397</FONT>        }<a name="line.397"></a>
<FONT color="green">398</FONT>    <a name="line.398"></a>
<FONT color="green">399</FONT>        /**<a name="line.399"></a>
<FONT color="green">400</FONT>         * Adds a key/value pair to the Configuration. Override this method to<a name="line.400"></a>
<FONT color="green">401</FONT>         * provide write access to underlying Configuration store.<a name="line.401"></a>
<FONT color="green">402</FONT>         *<a name="line.402"></a>
<FONT color="green">403</FONT>         * @param key key to use for mapping<a name="line.403"></a>
<FONT color="green">404</FONT>         * @param value object to store<a name="line.404"></a>
<FONT color="green">405</FONT>         */<a name="line.405"></a>
<FONT color="green">406</FONT>        protected abstract void addPropertyDirect(String key, Object value);<a name="line.406"></a>
<FONT color="green">407</FONT>    <a name="line.407"></a>
<FONT color="green">408</FONT>        /**<a name="line.408"></a>
<FONT color="green">409</FONT>         * Adds the specified value for the given property. This method supports<a name="line.409"></a>
<FONT color="green">410</FONT>         * single values and containers (e.g. collections or arrays) as well. In the<a name="line.410"></a>
<FONT color="green">411</FONT>         * latter case, {@code addPropertyDirect()} will be called for each<a name="line.411"></a>
<FONT color="green">412</FONT>         * element.<a name="line.412"></a>
<FONT color="green">413</FONT>         *<a name="line.413"></a>
<FONT color="green">414</FONT>         * @param key the property key<a name="line.414"></a>
<FONT color="green">415</FONT>         * @param value the value object<a name="line.415"></a>
<FONT color="green">416</FONT>         * @param delimiter the list delimiter character<a name="line.416"></a>
<FONT color="green">417</FONT>         */<a name="line.417"></a>
<FONT color="green">418</FONT>        private void addPropertyValues(String key, Object value, char delimiter)<a name="line.418"></a>
<FONT color="green">419</FONT>        {<a name="line.419"></a>
<FONT color="green">420</FONT>            Iterator&lt;?&gt; it = PropertyConverter.toIterator(value, delimiter);<a name="line.420"></a>
<FONT color="green">421</FONT>            while (it.hasNext())<a name="line.421"></a>
<FONT color="green">422</FONT>            {<a name="line.422"></a>
<FONT color="green">423</FONT>                addPropertyDirect(key, it.next());<a name="line.423"></a>
<FONT color="green">424</FONT>            }<a name="line.424"></a>
<FONT color="green">425</FONT>        }<a name="line.425"></a>
<FONT color="green">426</FONT>    <a name="line.426"></a>
<FONT color="green">427</FONT>        /**<a name="line.427"></a>
<FONT color="green">428</FONT>         * interpolate key names to handle ${key} stuff<a name="line.428"></a>
<FONT color="green">429</FONT>         *<a name="line.429"></a>
<FONT color="green">430</FONT>         * @param base string to interpolate<a name="line.430"></a>
<FONT color="green">431</FONT>         *<a name="line.431"></a>
<FONT color="green">432</FONT>         * @return returns the key name with the ${key} substituted<a name="line.432"></a>
<FONT color="green">433</FONT>         */<a name="line.433"></a>
<FONT color="green">434</FONT>        protected String interpolate(String base)<a name="line.434"></a>
<FONT color="green">435</FONT>        {<a name="line.435"></a>
<FONT color="green">436</FONT>            Object result = interpolate((Object) base);<a name="line.436"></a>
<FONT color="green">437</FONT>            return (result == null) ? null : result.toString();<a name="line.437"></a>
<FONT color="green">438</FONT>        }<a name="line.438"></a>
<FONT color="green">439</FONT>    <a name="line.439"></a>
<FONT color="green">440</FONT>        /**<a name="line.440"></a>
<FONT color="green">441</FONT>         * Returns the interpolated value. Non String values are returned without change.<a name="line.441"></a>
<FONT color="green">442</FONT>         *<a name="line.442"></a>
<FONT color="green">443</FONT>         * @param value the value to interpolate<a name="line.443"></a>
<FONT color="green">444</FONT>         *<a name="line.444"></a>
<FONT color="green">445</FONT>         * @return returns the value with variables substituted<a name="line.445"></a>
<FONT color="green">446</FONT>         */<a name="line.446"></a>
<FONT color="green">447</FONT>        protected Object interpolate(Object value)<a name="line.447"></a>
<FONT color="green">448</FONT>        {<a name="line.448"></a>
<FONT color="green">449</FONT>            return PropertyConverter.interpolate(value, this);<a name="line.449"></a>
<FONT color="green">450</FONT>        }<a name="line.450"></a>
<FONT color="green">451</FONT>    <a name="line.451"></a>
<FONT color="green">452</FONT>        /**<a name="line.452"></a>
<FONT color="green">453</FONT>         * Recursive handler for multple levels of interpolation.<a name="line.453"></a>
<FONT color="green">454</FONT>         *<a name="line.454"></a>
<FONT color="green">455</FONT>         * When called the first time, priorVariables should be null.<a name="line.455"></a>
<FONT color="green">456</FONT>         *<a name="line.456"></a>
<FONT color="green">457</FONT>         * @param base string with the ${key} variables<a name="line.457"></a>
<FONT color="green">458</FONT>         * @param priorVariables serves two purposes: to allow checking for loops,<a name="line.458"></a>
<FONT color="green">459</FONT>         * and creating a meaningful exception message should a loop occur. It's<a name="line.459"></a>
<FONT color="green">460</FONT>         * 0'th element will be set to the value of base from the first call. All<a name="line.460"></a>
<FONT color="green">461</FONT>         * subsequent interpolated variables are added afterward.<a name="line.461"></a>
<FONT color="green">462</FONT>         *<a name="line.462"></a>
<FONT color="green">463</FONT>         * @return the string with the interpolation taken care of<a name="line.463"></a>
<FONT color="green">464</FONT>         * @deprecated Interpolation is now handled by<a name="line.464"></a>
<FONT color="green">465</FONT>         * {@link PropertyConverter}; this method will no longer be<a name="line.465"></a>
<FONT color="green">466</FONT>         * called<a name="line.466"></a>
<FONT color="green">467</FONT>         */<a name="line.467"></a>
<FONT color="green">468</FONT>        @Deprecated<a name="line.468"></a>
<FONT color="green">469</FONT>        protected String interpolateHelper(String base, List&lt;?&gt; priorVariables)<a name="line.469"></a>
<FONT color="green">470</FONT>        {<a name="line.470"></a>
<FONT color="green">471</FONT>            return base; // just a dummy implementation<a name="line.471"></a>
<FONT color="green">472</FONT>        }<a name="line.472"></a>
<FONT color="green">473</FONT>    <a name="line.473"></a>
<FONT color="green">474</FONT>        public Configuration subset(String prefix)<a name="line.474"></a>
<FONT color="green">475</FONT>        {<a name="line.475"></a>
<FONT color="green">476</FONT>            return new SubsetConfiguration(this, prefix, ".");<a name="line.476"></a>
<FONT color="green">477</FONT>        }<a name="line.477"></a>
<FONT color="green">478</FONT>    <a name="line.478"></a>
<FONT color="green">479</FONT>        public void setProperty(String key, Object value)<a name="line.479"></a>
<FONT color="green">480</FONT>        {<a name="line.480"></a>
<FONT color="green">481</FONT>            fireEvent(EVENT_SET_PROPERTY, key, value, true);<a name="line.481"></a>
<FONT color="green">482</FONT>            setDetailEvents(false);<a name="line.482"></a>
<FONT color="green">483</FONT>            try<a name="line.483"></a>
<FONT color="green">484</FONT>            {<a name="line.484"></a>
<FONT color="green">485</FONT>                clearProperty(key);<a name="line.485"></a>
<FONT color="green">486</FONT>                addProperty(key, value);<a name="line.486"></a>
<FONT color="green">487</FONT>            }<a name="line.487"></a>
<FONT color="green">488</FONT>            finally<a name="line.488"></a>
<FONT color="green">489</FONT>            {<a name="line.489"></a>
<FONT color="green">490</FONT>                setDetailEvents(true);<a name="line.490"></a>
<FONT color="green">491</FONT>            }<a name="line.491"></a>
<FONT color="green">492</FONT>            fireEvent(EVENT_SET_PROPERTY, key, value, false);<a name="line.492"></a>
<FONT color="green">493</FONT>        }<a name="line.493"></a>
<FONT color="green">494</FONT>    <a name="line.494"></a>
<FONT color="green">495</FONT>        /**<a name="line.495"></a>
<FONT color="green">496</FONT>         * Removes the specified property from this configuration. This<a name="line.496"></a>
<FONT color="green">497</FONT>         * implementation performs some preparations and then delegates to<a name="line.497"></a>
<FONT color="green">498</FONT>         * {@code clearPropertyDirect()}, which will do the real work.<a name="line.498"></a>
<FONT color="green">499</FONT>         *<a name="line.499"></a>
<FONT color="green">500</FONT>         * @param key the key to be removed<a name="line.500"></a>
<FONT color="green">501</FONT>         */<a name="line.501"></a>
<FONT color="green">502</FONT>        public void clearProperty(String key)<a name="line.502"></a>
<FONT color="green">503</FONT>        {<a name="line.503"></a>
<FONT color="green">504</FONT>            fireEvent(EVENT_CLEAR_PROPERTY, key, null, true);<a name="line.504"></a>
<FONT color="green">505</FONT>            clearPropertyDirect(key);<a name="line.505"></a>
<FONT color="green">506</FONT>            fireEvent(EVENT_CLEAR_PROPERTY, key, null, false);<a name="line.506"></a>
<FONT color="green">507</FONT>        }<a name="line.507"></a>
<FONT color="green">508</FONT>    <a name="line.508"></a>
<FONT color="green">509</FONT>        /**<a name="line.509"></a>
<FONT color="green">510</FONT>         * Removes the specified property from this configuration. This method is<a name="line.510"></a>
<FONT color="green">511</FONT>         * called by {@code clearProperty()} after it has done some<a name="line.511"></a>
<FONT color="green">512</FONT>         * preparations. It should be overridden in sub classes. This base<a name="line.512"></a>
<FONT color="green">513</FONT>         * implementation is just left empty.<a name="line.513"></a>
<FONT color="green">514</FONT>         *<a name="line.514"></a>
<FONT color="green">515</FONT>         * @param key the key to be removed<a name="line.515"></a>
<FONT color="green">516</FONT>         */<a name="line.516"></a>
<FONT color="green">517</FONT>        protected void clearPropertyDirect(String key)<a name="line.517"></a>
<FONT color="green">518</FONT>        {<a name="line.518"></a>
<FONT color="green">519</FONT>            // override in sub classes<a name="line.519"></a>
<FONT color="green">520</FONT>        }<a name="line.520"></a>
<FONT color="green">521</FONT>    <a name="line.521"></a>
<FONT color="green">522</FONT>        public void clear()<a name="line.522"></a>
<FONT color="green">523</FONT>        {<a name="line.523"></a>
<FONT color="green">524</FONT>            fireEvent(EVENT_CLEAR, null, null, true);<a name="line.524"></a>
<FONT color="green">525</FONT>            setDetailEvents(false);<a name="line.525"></a>
<FONT color="green">526</FONT>            boolean useIterator = true;<a name="line.526"></a>
<FONT color="green">527</FONT>            try<a name="line.527"></a>
<FONT color="green">528</FONT>            {<a name="line.528"></a>
<FONT color="green">529</FONT>                Iterator&lt;String&gt; it = getKeys();<a name="line.529"></a>
<FONT color="green">530</FONT>                while (it.hasNext())<a name="line.530"></a>
<FONT color="green">531</FONT>                {<a name="line.531"></a>
<FONT color="green">532</FONT>                    String key = it.next();<a name="line.532"></a>
<FONT color="green">533</FONT>                    if (useIterator)<a name="line.533"></a>
<FONT color="green">534</FONT>                    {<a name="line.534"></a>
<FONT color="green">535</FONT>                        try<a name="line.535"></a>
<FONT color="green">536</FONT>                        {<a name="line.536"></a>
<FONT color="green">537</FONT>                            it.remove();<a name="line.537"></a>
<FONT color="green">538</FONT>                        }<a name="line.538"></a>
<FONT color="green">539</FONT>                        catch (UnsupportedOperationException usoex)<a name="line.539"></a>
<FONT color="green">540</FONT>                        {<a name="line.540"></a>
<FONT color="green">541</FONT>                            useIterator = false;<a name="line.541"></a>
<FONT color="green">542</FONT>                        }<a name="line.542"></a>
<FONT color="green">543</FONT>                    }<a name="line.543"></a>
<FONT color="green">544</FONT>    <a name="line.544"></a>
<FONT color="green">545</FONT>                    if (useIterator &amp;&amp; containsKey(key))<a name="line.545"></a>
<FONT color="green">546</FONT>                    {<a name="line.546"></a>
<FONT color="green">547</FONT>                        useIterator = false;<a name="line.547"></a>
<FONT color="green">548</FONT>                    }<a name="line.548"></a>
<FONT color="green">549</FONT>    <a name="line.549"></a>
<FONT color="green">550</FONT>                    if (!useIterator)<a name="line.550"></a>
<FONT color="green">551</FONT>                    {<a name="line.551"></a>
<FONT color="green">552</FONT>                        // workaround for Iterators that do not remove the property<a name="line.552"></a>
<FONT color="green">553</FONT>                        // on calling remove() or do not support remove() at all<a name="line.553"></a>
<FONT color="green">554</FONT>                        clearProperty(key);<a name="line.554"></a>
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<FONT color="green">556</FONT>                }<a name="line.556"></a>
<FONT color="green">557</FONT>            }<a name="line.557"></a>
<FONT color="green">558</FONT>            finally<a name="line.558"></a>
<FONT color="green">559</FONT>            {<a name="line.559"></a>
<FONT color="green">560</FONT>                setDetailEvents(true);<a name="line.560"></a>
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<FONT color="green">562</FONT>            fireEvent(EVENT_CLEAR, null, null, false);<a name="line.562"></a>
<FONT color="green">563</FONT>        }<a name="line.563"></a>
<FONT color="green">564</FONT>    <a name="line.564"></a>
<FONT color="green">565</FONT>        /**<a name="line.565"></a>
<FONT color="green">566</FONT>         * {@inheritDoc} This implementation returns keys that either match the<a name="line.566"></a>
<FONT color="green">567</FONT>         * prefix or start with the prefix followed by a dot ('.'). So the call<a name="line.567"></a>
<FONT color="green">568</FONT>         * {@code getKeys("db");} will find the keys {@code db},<a name="line.568"></a>
<FONT color="green">569</FONT>         * {@code db.user}, or {@code db.password}, but not the key<a name="line.569"></a>
<FONT color="green">570</FONT>         * {@code dbdriver}.<a name="line.570"></a>
<FONT color="green">571</FONT>         */<a name="line.571"></a>
<FONT color="green">572</FONT>        public Iterator&lt;String&gt; getKeys(String prefix)<a name="line.572"></a>
<FONT color="green">573</FONT>        {<a name="line.573"></a>
<FONT color="green">574</FONT>            return new PrefixedKeysIterator(getKeys(), prefix);<a name="line.574"></a>
<FONT color="green">575</FONT>        }<a name="line.575"></a>
<FONT color="green">576</FONT>    <a name="line.576"></a>
<FONT color="green">577</FONT>        public Properties getProperties(String key)<a name="line.577"></a>
<FONT color="green">578</FONT>        {<a name="line.578"></a>
<FONT color="green">579</FONT>            return getProperties(key, null);<a name="line.579"></a>
<FONT color="green">580</FONT>        }<a name="line.580"></a>
<FONT color="green">581</FONT>    <a name="line.581"></a>
<FONT color="green">582</FONT>        /**<a name="line.582"></a>
<FONT color="green">583</FONT>         * Get a list of properties associated with the given configuration key.<a name="line.583"></a>
<FONT color="green">584</FONT>         *<a name="line.584"></a>
<FONT color="green">585</FONT>         * @param key The configuration key.<a name="line.585"></a>
<FONT color="green">586</FONT>         * @param defaults Any default values for the returned<a name="line.586"></a>
<FONT color="green">587</FONT>         * {@code Properties} object. Ignored if {@code null}.<a name="line.587"></a>
<FONT color="green">588</FONT>         *<a name="line.588"></a>
<FONT color="green">589</FONT>         * @return The associated properties if key is found.<a name="line.589"></a>
<FONT color="green">590</FONT>         *<a name="line.590"></a>
<FONT color="green">591</FONT>         * @throws ConversionException is thrown if the key maps to an object that<a name="line.591"></a>
<FONT color="green">592</FONT>         * is not a String/List of Strings.<a name="line.592"></a>
<FONT color="green">593</FONT>         *<a name="line.593"></a>
<FONT color="green">594</FONT>         * @throws IllegalArgumentException if one of the tokens is malformed (does<a name="line.594"></a>
<FONT color="green">595</FONT>         * not contain an equals sign).<a name="line.595"></a>
<FONT color="green">596</FONT>         */<a name="line.596"></a>
<FONT color="green">597</FONT>        public Properties getProperties(String key, Properties defaults)<a name="line.597"></a>
<FONT color="green">598</FONT>        {<a name="line.598"></a>
<FONT color="green">599</FONT>            /*<a name="line.599"></a>
<FONT color="green">600</FONT>             * Grab an array of the tokens for this key.<a name="line.600"></a>
<FONT color="green">601</FONT>             */<a name="line.601"></a>
<FONT color="green">602</FONT>            String[] tokens = getStringArray(key);<a name="line.602"></a>
<FONT color="green">603</FONT>    <a name="line.603"></a>
<FONT color="green">604</FONT>            /*<a name="line.604"></a>
<FONT color="green">605</FONT>             * Each token is of the form 'key=value'.<a name="line.605"></a>
<FONT color="green">606</FONT>             */<a name="line.606"></a>
<FONT color="green">607</FONT>            Properties props = defaults == null ? new Properties() : new Properties(defaults);<a name="line.607"></a>
<FONT color="green">608</FONT>            for (String token : tokens)<a name="line.608"></a>
<FONT color="green">609</FONT>            {<a name="line.609"></a>
<FONT color="green">610</FONT>                int equalSign = token.indexOf('=');<a name="line.610"></a>
<FONT color="green">611</FONT>                if (equalSign &gt; 0)<a name="line.611"></a>
<FONT color="green">612</FONT>                {<a name="line.612"></a>
<FONT color="green">613</FONT>                    String pkey = token.substring(0, equalSign).trim();<a name="line.613"></a>
<FONT color="green">614</FONT>                    String pvalue = token.substring(equalSign + 1).trim();<a name="line.614"></a>
<FONT color="green">615</FONT>                    props.put(pkey, pvalue);<a name="line.615"></a>
<FONT color="green">616</FONT>                }<a name="line.616"></a>
<FONT color="green">617</FONT>                else if (tokens.length == 1 &amp;&amp; "".equals(token))<a name="line.617"></a>
<FONT color="green">618</FONT>                {<a name="line.618"></a>
<FONT color="green">619</FONT>                    // Semantically equivalent to an empty Properties<a name="line.619"></a>
<FONT color="green">620</FONT>                    // object.<a name="line.620"></a>
<FONT color="green">621</FONT>                    break;<a name="line.621"></a>
<FONT color="green">622</FONT>                }<a name="line.622"></a>
<FONT color="green">623</FONT>                else<a name="line.623"></a>
<FONT color="green">624</FONT>                {<a name="line.624"></a>
<FONT color="green">625</FONT>                    throw new IllegalArgumentException('\'' + token + "' does not contain an equals sign");<a name="line.625"></a>
<FONT color="green">626</FONT>                }<a name="line.626"></a>
<FONT color="green">627</FONT>            }<a name="line.627"></a>
<FONT color="green">628</FONT>            return props;<a name="line.628"></a>
<FONT color="green">629</FONT>        }<a name="line.629"></a>
<FONT color="green">630</FONT>    <a name="line.630"></a>
<FONT color="green">631</FONT>        /**<a name="line.631"></a>
<FONT color="green">632</FONT>         * {@inheritDoc}<a name="line.632"></a>
<FONT color="green">633</FONT>         * @see PropertyConverter#toBoolean(Object)<a name="line.633"></a>
<FONT color="green">634</FONT>         */<a name="line.634"></a>
<FONT color="green">635</FONT>        public boolean getBoolean(String key)<a name="line.635"></a>
<FONT color="green">636</FONT>        {<a name="line.636"></a>
<FONT color="green">637</FONT>            Boolean b = getBoolean(key, null);<a name="line.637"></a>
<FONT color="green">638</FONT>            if (b != null)<a name="line.638"></a>
<FONT color="green">639</FONT>            {<a name="line.639"></a>
<FONT color="green">640</FONT>                return b.booleanValue();<a name="line.640"></a>
<FONT color="green">641</FONT>            }<a name="line.641"></a>
<FONT color="green">642</FONT>            else<a name="line.642"></a>
<FONT color="green">643</FONT>            {<a name="line.643"></a>
<FONT color="green">644</FONT>                throw new NoSuchElementException('\'' + key + "' doesn't map to an existing object");<a name="line.644"></a>
<FONT color="green">645</FONT>            }<a name="line.645"></a>
<FONT color="green">646</FONT>        }<a name="line.646"></a>
<FONT color="green">647</FONT>    <a name="line.647"></a>
<FONT color="green">648</FONT>        /**<a name="line.648"></a>
<FONT color="green">649</FONT>         * {@inheritDoc}<a name="line.649"></a>
<FONT color="green">650</FONT>         * @see PropertyConverter#toBoolean(Object)<a name="line.650"></a>
<FONT color="green">651</FONT>         */<a name="line.651"></a>
<FONT color="green">652</FONT>        public boolean getBoolean(String key, boolean defaultValue)<a name="line.652"></a>
<FONT color="green">653</FONT>        {<a name="line.653"></a>
<FONT color="green">654</FONT>            return getBoolean(key, BooleanUtils.toBooleanObject(defaultValue)).booleanValue();<a name="line.654"></a>
<FONT color="green">655</FONT>        }<a name="line.655"></a>
<FONT color="green">656</FONT>    <a name="line.656"></a>
<FONT color="green">657</FONT>        /**<a name="line.657"></a>
<FONT color="green">658</FONT>         * Obtains the value of the specified key and tries to convert it into a<a name="line.658"></a>
<FONT color="green">659</FONT>         * {@code Boolean} object. If the property has no value, the passed<a name="line.659"></a>
<FONT color="green">660</FONT>         * in default value will be used.<a name="line.660"></a>
<FONT color="green">661</FONT>         *<a name="line.661"></a>
<FONT color="green">662</FONT>         * @param key the key of the property<a name="line.662"></a>
<FONT color="green">663</FONT>         * @param defaultValue the default value<a name="line.663"></a>
<FONT color="green">664</FONT>         * @return the value of this key converted to a {@code Boolean}<a name="line.664"></a>
<FONT color="green">665</FONT>         * @throws ConversionException if the value cannot be converted to a<a name="line.665"></a>
<FONT color="green">666</FONT>         * {@code Boolean}<a name="line.666"></a>
<FONT color="green">667</FONT>         * @see PropertyConverter#toBoolean(Object)<a name="line.667"></a>
<FONT color="green">668</FONT>         */<a name="line.668"></a>
<FONT color="green">669</FONT>        public Boolean getBoolean(String key, Boolean defaultValue)<a name="line.669"></a>
<FONT color="green">670</FONT>        {<a name="line.670"></a>
<FONT color="green">671</FONT>            Object value = resolveContainerStore(key);<a name="line.671"></a>
<FONT color="green">672</FONT>    <a name="line.672"></a>
<FONT color="green">673</FONT>            if (value == null)<a name="line.673"></a>
<FONT color="green">674</FONT>            {<a name="line.674"></a>
<FONT color="green">675</FONT>                return defaultValue;<a name="line.675"></a>
<FONT color="green">676</FONT>            }<a name="line.676"></a>
<FONT color="green">677</FONT>            else<a name="line.677"></a>
<FONT color="green">678</FONT>            {<a name="line.678"></a>
<FONT color="green">679</FONT>                try<a name="line.679"></a>
<FONT color="green">680</FONT>                {<a name="line.680"></a>
<FONT color="green">681</FONT>                    return PropertyConverter.toBoolean(interpolate(value));<a name="line.681"></a>
<FONT color="green">682</FONT>                }<a name="line.682"></a>
<FONT color="green">683</FONT>                catch (ConversionException e)<a name="line.683"></a>
<FONT color="green">684</FONT>                {<a name="line.684"></a>
<FONT color="green">685</FONT>                    throw new ConversionException('\'' + key + "' doesn't map to a Boolean object", e);<a name="line.685"></a>
<FONT color="green">686</FONT>                }<a name="line.686"></a>
<FONT color="green">687</FONT>            }<a name="line.687"></a>
<FONT color="green">688</FONT>        }<a name="line.688"></a>
<FONT color="green">689</FONT>    <a name="line.689"></a>
<FONT color="green">690</FONT>        public byte getByte(String key)<a name="line.690"></a>
<FONT color="green">691</FONT>        {<a name="line.691"></a>
<FONT color="green">692</FONT>            Byte b = getByte(key, null);<a name="line.692"></a>
<FONT color="green">693</FONT>            if (b != null)<a name="line.693"></a>
<FONT color="green">694</FONT>            {<a name="line.694"></a>
<FONT color="green">695</FONT>                return b.byteValue();<a name="line.695"></a>
<FONT color="green">696</FONT>            }<a name="line.696"></a>
<FONT color="green">697</FONT>            else<a name="line.697"></a>
<FONT color="green">698</FONT>            {<a name="line.698"></a>
<FONT color="green">699</FONT>                throw new NoSuchElementException('\'' + key + " doesn't map to an existing object");<a name="line.699"></a>
<FONT color="green">700</FONT>            }<a name="line.700"></a>
<FONT color="green">701</FONT>        }<a name="line.701"></a>
<FONT color="green">702</FONT>    <a name="line.702"></a>
<FONT color="green">703</FONT>        public byte getByte(String key, byte defaultValue)<a name="line.703"></a>
<FONT color="green">704</FONT>        {<a name="line.704"></a>
<FONT color="green">705</FONT>            return getByte(key, new Byte(defaultValue)).byteValue();<a name="line.705"></a>
<FONT color="green">706</FONT>        }<a name="line.706"></a>
<FONT color="green">707</FONT>    <a name="line.707"></a>
<FONT color="green">708</FONT>        public Byte getByte(String key, Byte defaultValue)<a name="line.708"></a>
<FONT color="green">709</FONT>        {<a name="line.709"></a>
<FONT color="green">710</FONT>            Object value = resolveContainerStore(key);<a name="line.710"></a>
<FONT color="green">711</FONT>    <a name="line.711"></a>
<FONT color="green">712</FONT>            if (value == null)<a name="line.712"></a>
<FONT color="green">713</FONT>            {<a name="line.713"></a>
<FONT color="green">714</FONT>                return defaultValue;<a name="line.714"></a>
<FONT color="green">715</FONT>            }<a name="line.715"></a>
<FONT color="green">716</FONT>            else<a name="line.716"></a>
<FONT color="green">717</FONT>            {<a name="line.717"></a>
<FONT color="green">718</FONT>                try<a name="line.718"></a>
<FONT color="green">719</FONT>                {<a name="line.719"></a>
<FONT color="green">720</FONT>                    return PropertyConverter.toByte(interpolate(value));<a name="line.720"></a>
<FONT color="green">721</FONT>                }<a name="line.721"></a>
<FONT color="green">722</FONT>                catch (ConversionException e)<a name="line.722"></a>
<FONT color="green">723</FONT>                {<a name="line.723"></a>
<FONT color="green">724</FONT>                    throw new ConversionException('\'' + key + "' doesn't map to a Byte object", e);<a name="line.724"></a>
<FONT color="green">725</FONT>                }<a name="line.725"></a>
<FONT color="green">726</FONT>            }<a name="line.726"></a>
<FONT color="green">727</FONT>        }<a name="line.727"></a>
<FONT color="green">728</FONT>    <a name="line.728"></a>
<FONT color="green">729</FONT>        public double getDouble(String key)<a name="line.729"></a>
<FONT color="green">730</FONT>        {<a name="line.730"></a>
<FONT color="green">731</FONT>            Double d = getDouble(key, null);<a name="line.731"></a>
<FONT color="green">732</FONT>            if (d != null)<a name="line.732"></a>
<FONT color="green">733</FONT>            {<a name="line.733"></a>
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<FONT color="green">735</FONT>            }<a name="line.735"></a>
<FONT color="green">736</FONT>            else<a name="line.736"></a>
<FONT color="green">737</FONT>            {<a name="line.737"></a>
<FONT color="green">738</FONT>                throw new NoSuchElementException('\'' + key + "' doesn't map to an existing object");<a name="line.738"></a>
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<FONT color="green">740</FONT>        }<a name="line.740"></a>
<FONT color="green">741</FONT>    <a name="line.741"></a>
<FONT color="green">742</FONT>        public double getDouble(String key, double defaultValue)<a name="line.742"></a>
<FONT color="green">743</FONT>        {<a name="line.743"></a>
<FONT color="green">744</FONT>            return getDouble(key, new Double(defaultValue)).doubleValue();<a name="line.744"></a>
<FONT color="green">745</FONT>        }<a name="line.745"></a>
<FONT color="green">746</FONT>    <a name="line.746"></a>
<FONT color="green">747</FONT>        public Double getDouble(String key, Double defaultValue)<a name="line.747"></a>
<FONT color="green">748</FONT>        {<a name="line.748"></a>
<FONT color="green">749</FONT>            Object value = resolveContainerStore(key);<a name="line.749"></a>
<FONT color="green">750</FONT>    <a name="line.750"></a>
<FONT color="green">751</FONT>            if (value == null)<a name="line.751"></a>
<FONT color="green">752</FONT>            {<a name="line.752"></a>
<FONT color="green">753</FONT>                return defaultValue;<a name="line.753"></a>
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<FONT color="green">756</FONT>            {<a name="line.756"></a>
<FONT color="green">757</FONT>                try<a name="line.757"></a>
<FONT color="green">758</FONT>                {<a name="line.758"></a>
<FONT color="green">759</FONT>                    return PropertyConverter.toDouble(interpolate(value));<a name="line.759"></a>
<FONT color="green">760</FONT>                }<a name="line.760"></a>
<FONT color="green">761</FONT>                catch (ConversionException e)<a name="line.761"></a>
<FONT color="green">762</FONT>                {<a name="line.762"></a>
<FONT color="green">763</FONT>                    throw new ConversionException('\'' + key + "' doesn't map to a Double object", e);<a name="line.763"></a>
<FONT color="green">764</FONT>                }<a name="line.764"></a>
<FONT color="green">765</FONT>            }<a name="line.765"></a>
<FONT color="green">766</FONT>        }<a name="line.766"></a>
<FONT color="green">767</FONT>    <a name="line.767"></a>
<FONT color="green">768</FONT>        public float getFloat(String key)<a name="line.768"></a>
<FONT color="green">769</FONT>        {<a name="line.769"></a>
<FONT color="green">770</FONT>            Float f = getFloat(key, null);<a name="line.770"></a>
<FONT color="green">771</FONT>            if (f != null)<a name="line.771"></a>
<FONT color="green">772</FONT>            {<a name="line.772"></a>
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<FONT color="green">777</FONT>                throw new NoSuchElementException('\'' + key + "' doesn't map to an existing object");<a name="line.777"></a>
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<FONT color="green">779</FONT>        }<a name="line.779"></a>
<FONT color="green">780</FONT>    <a name="line.780"></a>
<FONT color="green">781</FONT>        public float getFloat(String key, float defaultValue)<a name="line.781"></a>
<FONT color="green">782</FONT>        {<a name="line.782"></a>
<FONT color="green">783</FONT>            return getFloat(key, new Float(defaultValue)).floatValue();<a name="line.783"></a>
<FONT color="green">784</FONT>        }<a name="line.784"></a>
<FONT color="green">785</FONT>    <a name="line.785"></a>
<FONT color="green">786</FONT>        public Float getFloat(String key, Float defaultValue)<a name="line.786"></a>
<FONT color="green">787</FONT>        {<a name="line.787"></a>
<FONT color="green">788</FONT>            Object value = resolveContainerStore(key);<a name="line.788"></a>
<FONT color="green">789</FONT>    <a name="line.789"></a>
<FONT color="green">790</FONT>            if (value == null)<a name="line.790"></a>
<FONT color="green">791</FONT>            {<a name="line.791"></a>
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<FONT color="green">793</FONT>            }<a name="line.793"></a>
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<FONT color="green">795</FONT>            {<a name="line.795"></a>
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<FONT color="green">798</FONT>                    return PropertyConverter.toFloat(interpolate(value));<a name="line.798"></a>
<FONT color="green">799</FONT>                }<a name="line.799"></a>
<FONT color="green">800</FONT>                catch (ConversionException e)<a name="line.800"></a>
<FONT color="green">801</FONT>                {<a name="line.801"></a>
<FONT color="green">802</FONT>                    throw new ConversionException('\'' + key + "' doesn't map to a Float object", e);<a name="line.802"></a>
<FONT color="green">803</FONT>                }<a name="line.803"></a>
<FONT color="green">804</FONT>            }<a name="line.804"></a>
<FONT color="green">805</FONT>        }<a name="line.805"></a>
<FONT color="green">806</FONT>    <a name="line.806"></a>
<FONT color="green">807</FONT>        public int getInt(String key)<a name="line.807"></a>
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<FONT color="green">809</FONT>            Integer i = getInteger(key, null);<a name="line.809"></a>
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<FONT color="green">811</FONT>            {<a name="line.811"></a>
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<FONT color="green">814</FONT>            else<a name="line.814"></a>
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<FONT color="green">816</FONT>                throw new NoSuchElementException('\'' + key + "' doesn't map to an existing object");<a name="line.816"></a>
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<FONT color="green">818</FONT>        }<a name="line.818"></a>
<FONT color="green">819</FONT>    <a name="line.819"></a>
<FONT color="green">820</FONT>        public int getInt(String key, int defaultValue)<a name="line.820"></a>
<FONT color="green">821</FONT>        {<a name="line.821"></a>
<FONT color="green">822</FONT>            Integer i = getInteger(key, null);<a name="line.822"></a>
<FONT color="green">823</FONT>    <a name="line.823"></a>
<FONT color="green">824</FONT>            if (i == null)<a name="line.824"></a>
<FONT color="green">825</FONT>            {<a name="line.825"></a>
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<FONT color="green">828</FONT>    <a name="line.828"></a>
<FONT color="green">829</FONT>            return i.intValue();<a name="line.829"></a>
<FONT color="green">830</FONT>        }<a name="line.830"></a>
<FONT color="green">831</FONT>    <a name="line.831"></a>
<FONT color="green">832</FONT>        public Integer getInteger(String key, Integer defaultValue)<a name="line.832"></a>
<FONT color="green">833</FONT>        {<a name="line.833"></a>
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<FONT color="green">968</FONT>                    throw new ConversionException('\'' + key + "' doesn't map to a BigDecimal object", e);<a name="line.968"></a>
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<FONT color="green">973</FONT>        /**<a name="line.973"></a>
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<FONT color="green">1057</FONT>         * If a property is added to a configuration, it is checked whether it<a name="line.1057"></a>
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<FONT color="green">1083</FONT>                array[0] = interpolate((String) value);<a name="line.1083"></a>
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<FONT color="green">1090</FONT>                for (int i = 0; i &lt; array.length; i++)<a name="line.1090"></a>
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<FONT color="green">1117</FONT>            return getList(key, new ArrayList&lt;Object&gt;());<a name="line.1117"></a>
<FONT color="green">1118</FONT>        }<a name="line.1118"></a>
<FONT color="green">1119</FONT>    <a name="line.1119"></a>
<FONT color="green">1120</FONT>        public List&lt;Object&gt; getList(String key, List&lt;Object&gt; defaultValue)<a name="line.1120"></a>
<FONT color="green">1121</FONT>        {<a name="line.1121"></a>
<FONT color="green">1122</FONT>            Object value = getProperty(key);<a name="line.1122"></a>
<FONT color="green">1123</FONT>            List&lt;Object&gt; list;<a name="line.1123"></a>
<FONT color="green">1124</FONT>    <a name="line.1124"></a>
<FONT color="green">1125</FONT>            if (value instanceof String)<a name="line.1125"></a>
<FONT color="green">1126</FONT>            {<a name="line.1126"></a>
<FONT color="green">1127</FONT>                list = new ArrayList&lt;Object&gt;(1);<a name="line.1127"></a>
<FONT color="green">1128</FONT>                list.add(interpolate((String) value));<a name="line.1128"></a>
<FONT color="green">1129</FONT>            }<a name="line.1129"></a>
<FONT color="green">1130</FONT>            else if (value instanceof List)<a name="line.1130"></a>
<FONT color="green">1131</FONT>            {<a name="line.1131"></a>
<FONT color="green">1132</FONT>                list = new ArrayList&lt;Object&gt;();<a name="line.1132"></a>
<FONT color="green">1133</FONT>                List&lt;?&gt; l = (List&lt;?&gt;) value;<a name="line.1133"></a>
<FONT color="green">1134</FONT>    <a name="line.1134"></a>
<FONT color="green">1135</FONT>                // add the interpolated elements in the new list<a name="line.1135"></a>
<FONT color="green">1136</FONT>                for (Object elem : l)<a name="line.1136"></a>
<FONT color="green">1137</FONT>                {<a name="line.1137"></a>
<FONT color="green">1138</FONT>                    list.add(interpolate(elem));<a name="line.1138"></a>
<FONT color="green">1139</FONT>                }<a name="line.1139"></a>
<FONT color="green">1140</FONT>            }<a name="line.1140"></a>
<FONT color="green">1141</FONT>            else if (value == null)<a name="line.1141"></a>
<FONT color="green">1142</FONT>            {<a name="line.1142"></a>
<FONT color="green">1143</FONT>                list = defaultValue;<a name="line.1143"></a>
<FONT color="green">1144</FONT>            }<a name="line.1144"></a>
<FONT color="green">1145</FONT>            else if (value.getClass().isArray())<a name="line.1145"></a>
<FONT color="green">1146</FONT>            {<a name="line.1146"></a>
<FONT color="green">1147</FONT>                return Arrays.asList((Object[]) value);<a name="line.1147"></a>
<FONT color="green">1148</FONT>            }<a name="line.1148"></a>
<FONT color="green">1149</FONT>            else if (isScalarValue(value))<a name="line.1149"></a>
<FONT color="green">1150</FONT>            {<a name="line.1150"></a>
<FONT color="green">1151</FONT>                return Collections.singletonList((Object) value.toString());<a name="line.1151"></a>
<FONT color="green">1152</FONT>            }<a name="line.1152"></a>
<FONT color="green">1153</FONT>            else<a name="line.1153"></a>
<FONT color="green">1154</FONT>            {<a name="line.1154"></a>
<FONT color="green">1155</FONT>                throw new ConversionException('\'' + key + "' doesn't map to a List object: " + value + ", a "<a name="line.1155"></a>
<FONT color="green">1156</FONT>                        + value.getClass().getName());<a name="line.1156"></a>
<FONT color="green">1157</FONT>            }<a name="line.1157"></a>
<FONT color="green">1158</FONT>            return list;<a name="line.1158"></a>
<FONT color="green">1159</FONT>        }<a name="line.1159"></a>
<FONT color="green">1160</FONT>    <a name="line.1160"></a>
<FONT color="green">1161</FONT>        /**<a name="line.1161"></a>
<FONT color="green">1162</FONT>         * Returns an object from the store described by the key. If the value is a<a name="line.1162"></a>
<FONT color="green">1163</FONT>         * Collection object, replace it with the first object in the collection.<a name="line.1163"></a>
<FONT color="green">1164</FONT>         *<a name="line.1164"></a>
<FONT color="green">1165</FONT>         * @param key The property key.<a name="line.1165"></a>
<FONT color="green">1166</FONT>         *<a name="line.1166"></a>
<FONT color="green">1167</FONT>         * @return value Value, transparently resolving a possible collection dependency.<a name="line.1167"></a>
<FONT color="green">1168</FONT>         */<a name="line.1168"></a>
<FONT color="green">1169</FONT>        protected Object resolveContainerStore(String key)<a name="line.1169"></a>
<FONT color="green">1170</FONT>        {<a name="line.1170"></a>
<FONT color="green">1171</FONT>            Object value = getProperty(key);<a name="line.1171"></a>
<FONT color="green">1172</FONT>            if (value != null)<a name="line.1172"></a>
<FONT color="green">1173</FONT>            {<a name="line.1173"></a>
<FONT color="green">1174</FONT>                if (value instanceof Collection)<a name="line.1174"></a>
<FONT color="green">1175</FONT>                {<a name="line.1175"></a>
<FONT color="green">1176</FONT>                    Collection&lt;?&gt; collection = (Collection&lt;?&gt;) value;<a name="line.1176"></a>
<FONT color="green">1177</FONT>                    value = collection.isEmpty() ? null : collection.iterator().next();<a name="line.1177"></a>
<FONT color="green">1178</FONT>                }<a name="line.1178"></a>
<FONT color="green">1179</FONT>                else if (value.getClass().isArray() &amp;&amp; Array.getLength(value) &gt; 0)<a name="line.1179"></a>
<FONT color="green">1180</FONT>                {<a name="line.1180"></a>
<FONT color="green">1181</FONT>                    value = Array.get(value, 0);<a name="line.1181"></a>
<FONT color="green">1182</FONT>                }<a name="line.1182"></a>
<FONT color="green">1183</FONT>            }<a name="line.1183"></a>
<FONT color="green">1184</FONT>    <a name="line.1184"></a>
<FONT color="green">1185</FONT>            return value;<a name="line.1185"></a>
<FONT color="green">1186</FONT>        }<a name="line.1186"></a>
<FONT color="green">1187</FONT>    <a name="line.1187"></a>
<FONT color="green">1188</FONT>        /**<a name="line.1188"></a>
<FONT color="green">1189</FONT>         * Checks whether the specified object is a scalar value. This method is<a name="line.1189"></a>
<FONT color="green">1190</FONT>         * called by {@code getList()} and {@code getStringArray()} if the<a name="line.1190"></a>
<FONT color="green">1191</FONT>         * property requested is not a string, a list, or an array. If it returns<a name="line.1191"></a>
<FONT color="green">1192</FONT>         * &lt;b&gt;true&lt;/b&gt;, the calling method transforms the value to a string and<a name="line.1192"></a>
<FONT color="green">1193</FONT>         * returns a list or an array with this single element. This implementation<a name="line.1193"></a>
<FONT color="green">1194</FONT>         * returns &lt;b&gt;true&lt;/b&gt; if the value is of a wrapper type for a primitive<a name="line.1194"></a>
<FONT color="green">1195</FONT>         * type.<a name="line.1195"></a>
<FONT color="green">1196</FONT>         *<a name="line.1196"></a>
<FONT color="green">1197</FONT>         * @param value the value to be checked<a name="line.1197"></a>
<FONT color="green">1198</FONT>         * @return a flag whether the value is a scalar<a name="line.1198"></a>
<FONT color="green">1199</FONT>         * @since 1.7<a name="line.1199"></a>
<FONT color="green">1200</FONT>         */<a name="line.1200"></a>
<FONT color="green">1201</FONT>        protected boolean isScalarValue(Object value)<a name="line.1201"></a>
<FONT color="green">1202</FONT>        {<a name="line.1202"></a>
<FONT color="green">1203</FONT>            return ClassUtils.wrapperToPrimitive(value.getClass()) != null;<a name="line.1203"></a>
<FONT color="green">1204</FONT>        }<a name="line.1204"></a>
<FONT color="green">1205</FONT>    <a name="line.1205"></a>
<FONT color="green">1206</FONT>        /**<a name="line.1206"></a>
<FONT color="green">1207</FONT>         * Copies the content of the specified configuration into this<a name="line.1207"></a>
<FONT color="green">1208</FONT>         * configuration. If the specified configuration contains a key that is also<a name="line.1208"></a>
<FONT color="green">1209</FONT>         * present in this configuration, the value of this key will be replaced by<a name="line.1209"></a>
<FONT color="green">1210</FONT>         * the new value. &lt;em&gt;Note:&lt;/em&gt; This method won't work well when copying<a name="line.1210"></a>
<FONT color="green">1211</FONT>         * hierarchical configurations because it is not able to copy information<a name="line.1211"></a>
<FONT color="green">1212</FONT>         * about the properties' structure (i.e. the parent-child-relationships will<a name="line.1212"></a>
<FONT color="green">1213</FONT>         * get lost). So when dealing with hierarchical configuration objects their<a name="line.1213"></a>
<FONT color="green">1214</FONT>         * {@link HierarchicalConfiguration#clone() clone()} methods<a name="line.1214"></a>
<FONT color="green">1215</FONT>         * should be used.<a name="line.1215"></a>
<FONT color="green">1216</FONT>         *<a name="line.1216"></a>
<FONT color="green">1217</FONT>         * @param c the configuration to copy (can be &lt;b&gt;null&lt;/b&gt;, then this<a name="line.1217"></a>
<FONT color="green">1218</FONT>         * operation will have no effect)<a name="line.1218"></a>
<FONT color="green">1219</FONT>         * @since 1.5<a name="line.1219"></a>
<FONT color="green">1220</FONT>         */<a name="line.1220"></a>
<FONT color="green">1221</FONT>        public void copy(Configuration c)<a name="line.1221"></a>
<FONT color="green">1222</FONT>        {<a name="line.1222"></a>
<FONT color="green">1223</FONT>            if (c != null)<a name="line.1223"></a>
<FONT color="green">1224</FONT>            {<a name="line.1224"></a>
<FONT color="green">1225</FONT>                for (Iterator&lt;String&gt; it = c.getKeys(); it.hasNext();)<a name="line.1225"></a>
<FONT color="green">1226</FONT>                {<a name="line.1226"></a>
<FONT color="green">1227</FONT>                    String key = it.next();<a name="line.1227"></a>
<FONT color="green">1228</FONT>                    Object value = c.getProperty(key);<a name="line.1228"></a>
<FONT color="green">1229</FONT>                    fireEvent(EVENT_SET_PROPERTY, key, value, true);<a name="line.1229"></a>
<FONT color="green">1230</FONT>                    setDetailEvents(false);<a name="line.1230"></a>
<FONT color="green">1231</FONT>                    try<a name="line.1231"></a>
<FONT color="green">1232</FONT>                    {<a name="line.1232"></a>
<FONT color="green">1233</FONT>                        clearProperty(key);<a name="line.1233"></a>
<FONT color="green">1234</FONT>                        addPropertyValues(key, value, DISABLED_DELIMITER);<a name="line.1234"></a>
<FONT color="green">1235</FONT>                    }<a name="line.1235"></a>
<FONT color="green">1236</FONT>                    finally<a name="line.1236"></a>
<FONT color="green">1237</FONT>                    {<a name="line.1237"></a>
<FONT color="green">1238</FONT>                        setDetailEvents(true);<a name="line.1238"></a>
<FONT color="green">1239</FONT>                    }<a name="line.1239"></a>
<FONT color="green">1240</FONT>                    fireEvent(EVENT_SET_PROPERTY, key, value, false);<a name="line.1240"></a>
<FONT color="green">1241</FONT>                }<a name="line.1241"></a>
<FONT color="green">1242</FONT>            }<a name="line.1242"></a>
<FONT color="green">1243</FONT>        }<a name="line.1243"></a>
<FONT color="green">1244</FONT>    <a name="line.1244"></a>
<FONT color="green">1245</FONT>        /**<a name="line.1245"></a>
<FONT color="green">1246</FONT>         * Appends the content of the specified configuration to this configuration.<a name="line.1246"></a>
<FONT color="green">1247</FONT>         * The values of all properties contained in the specified configuration<a name="line.1247"></a>
<FONT color="green">1248</FONT>         * will be appended to this configuration. So if a property is already<a name="line.1248"></a>
<FONT color="green">1249</FONT>         * present in this configuration, its new value will be a union of the<a name="line.1249"></a>
<FONT color="green">1250</FONT>         * values in both configurations. &lt;em&gt;Note:&lt;/em&gt; This method won't work<a name="line.1250"></a>
<FONT color="green">1251</FONT>         * well when appending hierarchical configurations because it is not able to<a name="line.1251"></a>
<FONT color="green">1252</FONT>         * copy information about the properties' structure (i.e. the<a name="line.1252"></a>
<FONT color="green">1253</FONT>         * parent-child-relationships will get lost). So when dealing with<a name="line.1253"></a>
<FONT color="green">1254</FONT>         * hierarchical configuration objects their<a name="line.1254"></a>
<FONT color="green">1255</FONT>         * {@link HierarchicalConfiguration#clone() clone()} methods<a name="line.1255"></a>
<FONT color="green">1256</FONT>         * should be used.<a name="line.1256"></a>
<FONT color="green">1257</FONT>         *<a name="line.1257"></a>
<FONT color="green">1258</FONT>         * @param c the configuration to be appended (can be &lt;b&gt;null&lt;/b&gt;, then this<a name="line.1258"></a>
<FONT color="green">1259</FONT>         * operation will have no effect)<a name="line.1259"></a>
<FONT color="green">1260</FONT>         * @since 1.5<a name="line.1260"></a>
<FONT color="green">1261</FONT>         */<a name="line.1261"></a>
<FONT color="green">1262</FONT>        public void append(Configuration c)<a name="line.1262"></a>
<FONT color="green">1263</FONT>        {<a name="line.1263"></a>
<FONT color="green">1264</FONT>            if (c != null)<a name="line.1264"></a>
<FONT color="green">1265</FONT>            {<a name="line.1265"></a>
<FONT color="green">1266</FONT>                for (Iterator&lt;String&gt; it = c.getKeys(); it.hasNext();)<a name="line.1266"></a>
<FONT color="green">1267</FONT>                {<a name="line.1267"></a>
<FONT color="green">1268</FONT>                    String key = it.next();<a name="line.1268"></a>
<FONT color="green">1269</FONT>                    Object value = c.getProperty(key);<a name="line.1269"></a>
<FONT color="green">1270</FONT>                    fireEvent(EVENT_ADD_PROPERTY, key, value, true);<a name="line.1270"></a>
<FONT color="green">1271</FONT>                    addPropertyValues(key, value, DISABLED_DELIMITER);<a name="line.1271"></a>
<FONT color="green">1272</FONT>                    fireEvent(EVENT_ADD_PROPERTY, key, value, false);<a name="line.1272"></a>
<FONT color="green">1273</FONT>                }<a name="line.1273"></a>
<FONT color="green">1274</FONT>            }<a name="line.1274"></a>
<FONT color="green">1275</FONT>        }<a name="line.1275"></a>
<FONT color="green">1276</FONT>    <a name="line.1276"></a>
<FONT color="green">1277</FONT>        /**<a name="line.1277"></a>
<FONT color="green">1278</FONT>         * Returns a configuration with the same content as this configuration, but<a name="line.1278"></a>
<FONT color="green">1279</FONT>         * with all variables replaced by their actual values. This method tries to<a name="line.1279"></a>
<FONT color="green">1280</FONT>         * clone the configuration and then perform interpolation on all properties.<a name="line.1280"></a>
<FONT color="green">1281</FONT>         * So property values of the form &lt;code&gt;${var}&lt;/code&gt; will be resolved as<a name="line.1281"></a>
<FONT color="green">1282</FONT>         * far as possible (if a variable cannot be resolved, it remains unchanged).<a name="line.1282"></a>
<FONT color="green">1283</FONT>         * This operation is useful if the content of a configuration is to be<a name="line.1283"></a>
<FONT color="green">1284</FONT>         * exported or processed by an external component that does not support<a name="line.1284"></a>
<FONT color="green">1285</FONT>         * variable interpolation.<a name="line.1285"></a>
<FONT color="green">1286</FONT>         *<a name="line.1286"></a>
<FONT color="green">1287</FONT>         * @return a configuration with all variables interpolated<a name="line.1287"></a>
<FONT color="green">1288</FONT>         * @throws ConfigurationRuntimeException if this configuration cannot be<a name="line.1288"></a>
<FONT color="green">1289</FONT>         * cloned<a name="line.1289"></a>
<FONT color="green">1290</FONT>         * @since 1.5<a name="line.1290"></a>
<FONT color="green">1291</FONT>         */<a name="line.1291"></a>
<FONT color="green">1292</FONT>        public Configuration interpolatedConfiguration()<a name="line.1292"></a>
<FONT color="green">1293</FONT>        {<a name="line.1293"></a>
<FONT color="green">1294</FONT>            // first clone this configuration<a name="line.1294"></a>
<FONT color="green">1295</FONT>            AbstractConfiguration c = (AbstractConfiguration) ConfigurationUtils<a name="line.1295"></a>
<FONT color="green">1296</FONT>                    .cloneConfiguration(this);<a name="line.1296"></a>
<FONT color="green">1297</FONT>    <a name="line.1297"></a>
<FONT color="green">1298</FONT>            // now perform interpolation<a name="line.1298"></a>
<FONT color="green">1299</FONT>            c.setDelimiterParsingDisabled(true);<a name="line.1299"></a>
<FONT color="green">1300</FONT>            for (Iterator&lt;String&gt; it = getKeys(); it.hasNext();)<a name="line.1300"></a>
<FONT color="green">1301</FONT>            {<a name="line.1301"></a>
<FONT color="green">1302</FONT>                String key = it.next();<a name="line.1302"></a>
<FONT color="green">1303</FONT>                c.setProperty(key, getList(key));<a name="line.1303"></a>
<FONT color="green">1304</FONT>            }<a name="line.1304"></a>
<FONT color="green">1305</FONT>    <a name="line.1305"></a>
<FONT color="green">1306</FONT>            c.setDelimiterParsingDisabled(isDelimiterParsingDisabled());<a name="line.1306"></a>
<FONT color="green">1307</FONT>            return c;<a name="line.1307"></a>
<FONT color="green">1308</FONT>        }<a name="line.1308"></a>
<FONT color="green">1309</FONT>    }<a name="line.1309"></a>




























































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